Enable strict typing for rfxtrx (#74927)

* Additional typing

* Enable strict typing

* Avoid changes causing coverage change

* Adjust comment on force update

* Rename to replace_devices

* Reduce typing scope

* Adjust mypy

mypy.ini

@@ -1882,6 +1882,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.rfxtrx.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.rhasspy.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true